org.jxmapviewer.viewer.wms.WMSService Maven / Gradle / Ivy

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/*
 * WMSService.java
 *
 * Created on October 7, 2006, 6:06 PM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package org.jxmapviewer.viewer.wms;

import org.jxmapviewer.viewer.util.MercatorUtils;

/**
 * A class that represents a WMS mapping service. 
 * See http://en.wikipedia.org/wiki/Web_Map_Service for more information.
 * @author joshy
 */
public class WMSService
{
    private String baseUrl;
    private String layer;

    /** 
     * Creates a new instance of WMSService
     */
        // TODO: not working -> remove 
    public WMSService()
    {
        // by default use a known nasa server
        setLayer("BMNG");
        setBaseUrl("http://wms.jpl.nasa.gov/wms.cgi?");
    }

    /**
     * @param baseUrl the base URL
     * @param layer the layer
     */
    public WMSService(String baseUrl, String layer)
    {
        this.baseUrl = baseUrl;
        this.layer = layer;
    }

    /**
     * Convertes to a WMS URL
     * @param x the x coordinate
     * @param y the y coordinate
     * @param zoom the zomm factor
     * @param tileSize the tile size
     * @return a URL request string 
     */
    public String toWMSURL(int x, int y, int zoom, int tileSize)
    {
        String format = "image/jpeg";
        String styles = "";
        String srs = "EPSG:4326";
        int ts = tileSize;
        int circumference = widthOfWorldInPixels(zoom, tileSize);
        double radius = circumference / (2 * Math.PI);
        double ulx = MercatorUtils.xToLong(x * ts, radius);
        double uly = MercatorUtils.yToLat(y * ts, radius);
        double lrx = MercatorUtils.xToLong((x + 1) * ts, radius);
        double lry = MercatorUtils.yToLat((y + 1) * ts, radius);
        String bbox = ulx + "," + uly + "," + lrx + "," + lry;
        String url = getBaseUrl() + "version=1.1.1&request=" + "GetMap&Layers=" + layer + "&format=" + format
                + "&BBOX=" + bbox + "&width=" + ts + "&height=" + ts + "&SRS=" + srs + "&Styles=" + styles +
                // "&transparent=TRUE"+
                "";
        return url;
    }

    private int widthOfWorldInPixels(int zoom, int TILE_SIZE)
    {
        // int TILE_SIZE = 256;
        int tiles = (int) Math.pow(2, zoom);
        int circumference = TILE_SIZE * tiles;
        return circumference;
    }

    /**
     * @return the layer
     */
    public String getLayer()
    {
        return layer;
    }

    /**
     * @param layer the layer
     */
    public void setLayer(String layer)
    {
        this.layer = layer;
    }

    /**
     * @return the base URL
     */
    public String getBaseUrl()
    {
        return baseUrl;
    }

    /**
     * @param baseUrl the base URL
     */
    public void setBaseUrl(String baseUrl)
    {
        this.baseUrl = baseUrl;
    }

}